| 发明名称 |
HEAT TREATING METHOD FOR HEADING PORTION OF PC STEEL ROD |
| 摘要 |
PURPOSE:To enhance the fatigue strength of the heading portion of a PC steel rod used as a concrete tie and so on by warm heating the PC steel rod and immediately quenching it. |
| 申请公布号 |
JPS53149118(A) |
申请公布日期 |
1978.12.26 |
| 申请号 |
JP19770064124 |
申请日期 |
1977.06.01 |
| 申请人 |
SUMITOMO METAL IND |
发明人 |
HIRAKAWA KENJI;TOYAMA KAZUO |
| 分类号 |
C21D1/00;C21D8/08 |
主分类号 |
C21D1/00 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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